African American and Afro-Caribbean elders differ in regard to ethnic group membership, place of birth, and years of residence in the United States. In this study, the authors compare self-rated health status, function, and reports of substance use in these two groups. Fifty low-income African American and fifty low-income Afro-Caribbean adults older than 55 were matched on gender, income, and age (within a range of 3 years) for this study. Self-reported mental and physical health (SF-8), function (basic and independent activities of daily living), and tobacco and alcohol use were measured. Significant differences between the two ethnic groups were found on four of the SF-8 domains, the physical health summary measure, and tobacco use but not on the mental health summary measure, function, or alcohol use. The differences that emerged suggest a more positive health status and healthier behavior in the immigrant Afro-Caribbean group. Results may be explained by the healthy immigrant effect relating to better health of immigrant as opposed to nonimmigrant populations. (Contains 2 tables.)